As many as 154 new bird varieties have been spotted during the annual bird survey at the Aralam wildlife sanctuary, increasing the total number of bird species found there to 240.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/154-new-bird-varieties-spotted
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-thiruvananthapuram
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/kerala
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/birds
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/aralam-sa